EP1362824A1 - Hubfahrzeug mit teleskopischem Hebearm - Google Patents

Hubfahrzeug mit teleskopischem Hebearm Download PDF

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Publication number
EP1362824A1
EP1362824A1 EP02425305A EP02425305A EP1362824A1 EP 1362824 A1 EP1362824 A1 EP 1362824A1 EP 02425305 A EP02425305 A EP 02425305A EP 02425305 A EP02425305 A EP 02425305A EP 1362824 A1 EP1362824 A1 EP 1362824A1
Authority
EP
European Patent Office
Prior art keywords
frame
telescopic
vehicle
cylinder
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02425305A
Other languages
English (en)
French (fr)
Other versions
EP1362824B1 (de
Inventor
Yukio Kinoshita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Utility Europe SpA
Original Assignee
Komatsu Utility Europe SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP02425305A priority Critical patent/EP1362824B1/de
Priority to AT02425305T priority patent/ATE320401T1/de
Priority to DE60209877T priority patent/DE60209877T2/de
Priority to ES02425305T priority patent/ES2259368T3/es
Priority to PT02425305T priority patent/PT1362824E/pt
Application filed by Komatsu Utility Europe SpA filed Critical Komatsu Utility Europe SpA
Priority to US10/158,859 priority patent/US6699002B2/en
Priority to CA002398228A priority patent/CA2398228C/en
Publication of EP1362824A1 publication Critical patent/EP1362824A1/de
Application granted granted Critical
Publication of EP1362824B1 publication Critical patent/EP1362824B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom

Definitions

  • the present invention relates to a telescopic lifting vehicle comprising the characteristics expressed in the preamble to Claim 1.
  • telescopic lifting vehicles have been constructed with a central telescopic arm, at the two sides whereof are mounted at one side the driver's cab and at the other the engine (as described, for example, in the Patent DE 2 739 537).
  • Another characteristic that hampers the lowered positioning of the telescopic arm, in currently used lifting vehicles, consists of the shape of the frontal stabilisers of the vehicle , and in particular in the shape of the frame whereto the stabiliser feet are associated.
  • Said frame has a latching portion fastened to the frame of the vehicle , and a support portion bearing the feet.
  • the latching portion has a substantially rectangular coupling surface able to be fastened to the front portion of the vehicle frame, below the telescopic arm ( Figures 5 through 7).
  • the presence of the latching portion thus constitutes a limit for the lowering of the arm relative to the vehicle .
  • the technical task constituting the basis for the present invention is to obtain a telescopic lifting vehicle that overcomes the aforementioned drawbacks.
  • a technical task of the present invention is to obtain a telescopic lifting vehicle that assures an excellent visibility to the operator sitting in the cab, whilst keeping the centre of gravity of the vehicle lower than in traditional vehicle s.
  • the reference number 1 globally indicates a telescopic lifting vehicle, according to the present invention.
  • the lifting vehicle 1 is constituted by a support frame 2 having a central longitudinal axis of development, at the sides whereof are mounted on one side a control cab 3, on the other an engine 4 for powering the vehicle 1.
  • a telescopic arm 5 having its base portion 6 pivotally engaged to a rear portion of the frame 2 itself, according to a horizontal axis perpendicular to the longitudinal axis.
  • the arm 5 further has an operative extremity 7 able to be associated to an operative organ 8, such as a lifting fork as shown in the accompanying figures.
  • the vehicle 1 is further provided with a front axle 9 and with a rear axle 10 provided with wheels.
  • a front axle 9 and with a rear axle 10 provided with wheels.
  • the engine 4 which in the preferred embodiment has its own axis positioned horizontally and inclined towards the front part of the longitudinal axis of the vehicle 1, and each of the two axles 9, 10, are further connected, in this order, a transmission 11, a transfer case 12 and a drive shaft 13 developing horizontally under the frame 2.
  • the drive shaft 13 is formed by two portions 13a (front portion) and 13b (rear portion) both connected to the transfer case 12.
  • the frame 2 between the engine 4 and the cab 3, has a housing 14 open superiorly and developing over the entire length of the vehicle 1 along the longitudinal central axis, inside which can be inserted, at least partially, the telescopic arm 5, when it is in non operative position.
  • the arm 5 is movable between the non operative position and an operative position in which it is inclined upwards ( Figures 16 and 18) through a lifting cylinder 15 which has a first end 16 pivotally engaged to the frame 2 and a second end 17 pivotally engaged to the telescopic arm 5, and which is positioned below the telescopic arm 5 itself.
  • the frame 2 has a vertical opening 18 in correspondence with at least a part of the housing 14, opening 18 in which the lifting cylinder 15 is inserted when the telescopic arm 5 is recessed in the housing 14. In this circumstance the lifting cylinder 15 projects inferiorly from the frame 2.
  • the lifting cylinder 15 is preferably positioned in front of the rear axle 10, behind the transfer case 12, above the drive shaft 13 and below the frame 2.
  • the frame 2 is constituted by two lateral bodies 19, 20, each defining a lateral wall of the housing 14, and identifiable as a first body 19 positioned on the side of the cab 3 and a second body 20 positioned on the side of the engine 4, connected to a plurality of brackets 21 having horizontal development, transverse to the longitudinal axis of the vehicle 1, and positioned below the housing 14.
  • Each axle 9, 10 is supported by a pair of brackets 21, positioned one in front and one behind it.
  • first end 16 of the lifting cylinder 15 is pivotally engaged to one of the brackets 21 supporting the rear axle 10, specifically to the front one 23 of the two.
  • the telescopic lifting vehicle I further comprises means 24 for levelling the operative organ 8 to maintain the operative organ 8 parallel to itself during the motions of the arm 5, means which are constituted by a levelling cylinder 25 fastened to the operative end 7 of the arm 5, and by a compensating cylinder 26 hydraulically connected to the levelling cylinder 25.
  • the compensation cylinder 26 has a primary end 27 pivotally engaged to the frame 2 and a secondary end 28 pivotally engaged to the telescopic arm 5, and it is positioned parallel and horizontally coplanar to the lifting cylinder 15 below the telescopic arm 5, in such a way as to be also inserted in the opening 17 when the arm 5 is inserted in the housing 14.
  • the compensating cylinder 26 has a length equal to that of the lifting cylinder 15, so that the first end 16 of the lifting cylinder 15 and the primary end 27 of the compensating cylinder 26 are pivotally engaged to the frame 2 by means of a single first pivot pin 29, and, similarly, in such a way that the second end 17 of the lifting cylinder 15 and the secondary end 28 of the compensating cylinder are pivotally engaged to the frame 2 by means of a single second pivot pin 30.
  • Each pivot pin 29, 30 is inserted through two forks set side by side, fastened to the frame 2, having a central tine in common, and destined one to the lifting cylinder 15 and one to the compensating cylinder 26.
  • the telescopic lifting vehicle 1 is also provided with stabilisation means 34 mounted anteriorly to the frame 2, and constituted by a structure 35 bearing two legs 36 each provided with a stabiliser foot 37.
  • the structure 35 comprises a portion 38 for latching to the frame 2 and a portion 39 for supporting the legs 36 which extends transversely relative to the vehicle 1.
  • the support portion 39 has an arcuate shape going partially around the telescopic arm 5.
  • the legs 36 are positioned at the lateral ends of the support portion 39 and have each an inner end 40 pivotally engaged to the support portion 39, and an outer end 41 bearing the stabiliser foot 37.
  • Each leg 36 can be actuated between a locked position in which the foot 37 is set down on the ground, and a manoeuvring position in which the foot 37 is raised off the ground.
  • the latching portion 38 is associated to a front portion 42 of the frame 2 whilst the supporting portion 39 is integrally connected with the latching portion 38 in its own intermediate portion.
  • the supporting portion 39 is below it.
  • the latching portion 38 instead is associated to the frame 2 at the two sides of the housing 14, and has, in correspondence with the related areas of coupling to the frame 2, a U shape with a side of the U fastened to the first lateral body 19 and the other side of the U fastened to the second lateral body 20.
  • the latching portion 38 also has a second surface 43 able to be associated to the frame 2 below its front portion 42 ( Figure 21).
  • each leg 36 The actuation of each leg 36 is performed by a hydraulic actuating cylinder 44 having its jacket and piston associated one below the telescopic arm 5 to the support portion 39 of the structure 35, the other one to the leg 36.
  • the hydraulic cylinders are fed by means of a feed valve 45 associated to each cylinder 44 in correspondence with its area close to the leg 36, in such a way as not to be a hindrance for the arm 5 ( Figure 8).
  • the operation of the vehicle 1 of the present invention takes place in ways similar to those of traditional telescopic lifters, and directly deducible from the description made heretofore of the vehicle 1 itself.
  • the present invention achieves important advantages, since, for the same free height from the ground and the same dimensions of the arm and of the cab, a vehicle in accordance with the present invention has a lower centre of gravity than do vehicles in accordance with the prior art, whilst also assuring an excellent visibility to the operator sitting in the cab.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP02425305A 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem Hebearm Expired - Lifetime EP1362824B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT02425305T ATE320401T1 (de) 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem hebearm
DE60209877T DE60209877T2 (de) 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem Hebearm
ES02425305T ES2259368T3 (es) 2002-05-15 2002-05-15 Vehiculo elevador con un brazo de elevacion telescopico.
PT02425305T PT1362824E (pt) 2002-05-15 2002-05-15 Veiculo de levantamento com um braco telescopico de levantamento
EP02425305A EP1362824B1 (de) 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem Hebearm
US10/158,859 US6699002B2 (en) 2002-05-15 2002-06-03 Telescopic lifting vehicle
CA002398228A CA2398228C (en) 2002-05-15 2002-08-14 Telescopic lifting vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425305A EP1362824B1 (de) 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem Hebearm

Publications (2)

Publication Number Publication Date
EP1362824A1 true EP1362824A1 (de) 2003-11-19
EP1362824B1 EP1362824B1 (de) 2006-03-15

Family

ID=29266046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02425305A Expired - Lifetime EP1362824B1 (de) 2002-05-15 2002-05-15 Hubfahrzeug mit teleskopischem Hebearm

Country Status (7)

Country Link
US (1) US6699002B2 (de)
EP (1) EP1362824B1 (de)
AT (1) ATE320401T1 (de)
CA (1) CA2398228C (de)
DE (1) DE60209877T2 (de)
ES (1) ES2259368T3 (de)
PT (1) PT1362824E (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005032996A1 (ja) * 2003-10-02 2005-04-14 Hitachi Construction Machinery Co., Ltd. 作業機械
CN102180407A (zh) * 2011-05-09 2011-09-14 三一汽车起重机械有限公司 一种起重机取力装置及起重机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20110780A1 (it) * 2011-08-26 2013-02-27 Merlo Project Srl Veicolo sollevatore a braccio telescopico e relativo procedimento di fabbricazione
USD756057S1 (en) * 2014-09-04 2016-05-10 Liebherr-Werk Nenzing Gmbh Reachstacker
USD758039S1 (en) * 2014-09-04 2016-05-31 Liebherr-Werk Nenzing Gmbh Reachstacker
DE102014219104A1 (de) * 2014-09-23 2016-03-24 Zf Friedrichshafen Ag Antriebsstrang für ein Fahrzeug
CN107337155A (zh) * 2017-07-13 2017-11-10 河南麻省新能石化实业有限公司 微型自动化叉车及应用方法
CN110468705A (zh) * 2019-08-29 2019-11-19 厦门大学嘉庚学院 一种可收合的桥梁检测车

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199861A (en) * 1987-07-27 1993-04-06 Merlo S.P.A. Industria Metalmeccanica Lifting truck with a telescopic lifting arm
EP0692448A1 (de) * 1994-07-15 1996-01-17 J.C. Bamford Excavators Limited Handhabungsfahrzeug für Material
EP0876932A2 (de) * 1997-05-09 1998-11-11 Caterpillar Inc. Kraftübertragungseinrichtung für eine Arbeitsmachine
EP1084986A1 (de) * 1999-09-16 2001-03-21 J.C. Bamford Excavators Limited Handhabungsfahrzeug für Material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2739537A1 (de) 1976-09-03 1978-03-09 Loed Corp Schwenkgabelanordnung fuer verladeausruestungen
US4266909A (en) * 1979-01-29 1981-05-12 Westendorf Manufacturing Co. Means for hydraulic self-leveling of a loader bucket
US4515520A (en) * 1982-09-13 1985-05-07 J. I. Case Company Stabilizer assembly
GB2292930B (en) * 1992-06-30 1996-10-02 Caterpillar Inc Material handling machine
GB9717892D0 (en) * 1997-08-23 1997-10-29 Jcb Special Products Ltd Skid steer loader vehicle
IT1304978B1 (it) * 1998-09-10 2001-04-05 Merlo Ind Metalmecc Veicolo utilizzabile come sollevatore e trattore agricolo.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5199861A (en) * 1987-07-27 1993-04-06 Merlo S.P.A. Industria Metalmeccanica Lifting truck with a telescopic lifting arm
EP0692448A1 (de) * 1994-07-15 1996-01-17 J.C. Bamford Excavators Limited Handhabungsfahrzeug für Material
EP0876932A2 (de) * 1997-05-09 1998-11-11 Caterpillar Inc. Kraftübertragungseinrichtung für eine Arbeitsmachine
EP1084986A1 (de) * 1999-09-16 2001-03-21 J.C. Bamford Excavators Limited Handhabungsfahrzeug für Material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005032996A1 (ja) * 2003-10-02 2005-04-14 Hitachi Construction Machinery Co., Ltd. 作業機械
CN102180407A (zh) * 2011-05-09 2011-09-14 三一汽车起重机械有限公司 一种起重机取力装置及起重机
CN102180407B (zh) * 2011-05-09 2012-08-08 三一汽车起重机械有限公司 一种起重机取力装置及起重机

Also Published As

Publication number Publication date
ATE320401T1 (de) 2006-04-15
PT1362824E (pt) 2006-06-30
EP1362824B1 (de) 2006-03-15
CA2398228A1 (en) 2003-11-15
ES2259368T3 (es) 2006-10-01
DE60209877D1 (de) 2006-05-11
US6699002B2 (en) 2004-03-02
CA2398228C (en) 2009-05-19
DE60209877T2 (de) 2006-11-02
US20030215321A1 (en) 2003-11-20

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